Machine for applying pressure to shoes



Sept. 8, 1931. F. D. KINNEY 1,822,039

MACHINE FOR APPLYING PEAIESSURE TO SHOES Filed Feb. 5. 1929 2Sheets-Sheet 1 Sept. 8, 1931. F. D. KINNEY MACHINE FOR APPLYING PRESSURETO SHOES Filed Feb. 5, 1929 2 Sheet s-Sheet 2 II II //Vl/ENTLZR a 9 K55%; ma

Patented Sept. 8 i931 UNITED STATES PATENT oer-"E FAY I). KINNEY, OFWENHAM, MASSACHUSETTS, .ASSIGNOR T0 UNITED SI-IOE MACHIN- ERYCORPORATION, OF PATERSON, NEW JERSEY A CORPORATION OF NEW JERSEY MACHINEFOR APPLYING PRESSURE T0 SHOES Application filed February 5, 1929.

This invention relates to machines for applying pressure to shoes and isherein illustrated as embodied in a machine particularly adapted toapply pressure to the upturned margin of an unvulcanized rubber sole ina zone extending around the lower portion of the upper of a lasted shoe.

In the manufacture of shoes having rubber soles which are vulcanized inplace it is 10 common to apply a foxing of unvulcanized rubber along thelower margin of the lasted shoe, to apply to the bottom of'the shoe anunvulcanized rubber sole having a beveled margin which projects beyondthe edge of the bottom of the shoe, and then to lay the sole by pressingit against the bottom of the shoe, bending the beveled margin of thesole up around the edge of the bottom of the shoe and pressing theupwardly bent margin againstthe foxing. It sometimes happens that theupwardly bent margin, and more particularly the upper edge thereof, isnot pressed firmly into contact with the foXing during the sole layingoperation, and, if it is not so pressed, a satisfactory joint betweenthe two will not be secured when the shoe is subsequently vulcanized. Inorder to ensure that the upper edge of the upwardly bent margin of thesole shall be pressed securely into place, it is customary, after thesole has been laid in the manner which has been described above, toperform an additional pressing operation by hand upon the upturnedmargin of the sole by running a so-called stitching wheel along the edgeof the up turned margin to ensure that it shall be firmly pressed at allpoints-and particularly along its extreme edge-against the foXing. Anobject of the present invention is to pro vide a machine by which thishand operation and similar pressing operations may be carried out.

According to one feature of the invention there is provided a sectionalholder the sec tions of which are fastened together by a flexible memberso that the holder may be caused to conform to the curves along thelower edge of a shoe, and a distensible member carried by the holderwhich may be distended by air or other fluid pressure to causecontaining Serial No. 337,674.

pressure to be applied to the shoe. In the illustrated construction twosubstantially U- shaped sectional holders are provided, one for therearpart of the lower margin of the shoe and one for the forepart, thesections of each holder being fastened together by a flexible steelband, and each holder containing a hollow, distensible, rubber memberwhich may be inflated at the proper time to apply pressure to the shoe.In the operation of the machine, one of the holders is first broughtinto contact with the rear part of the shoe in the locality of theupturned margin of the sole and the distensible member inflated; andthen this holder is withdrawn and the other holder caused to actsimilarly upon the forepart of the shoe.

This and other features of the invention including certain details ofconstruction and combinations of parts will be described as embodied inan illustrated machine and pointed out in the appended claims.

Referring now to the accompanying drawlngs:

Fig. 1 is a front view, partly in elevation and partly in section, of amachine in which the present invention is embodied, and

Fig. 2 is a plan view of the machine.

The machine comprises a fiat bed or table 3 having rising from it astandard 5. Ad justably held by a set screw 7 in the upper end of thestandard is a horizontal rod 9 to the outer end of which the stem 11 ofa block 13 is adjustably fastened by a set screw 15, saidblock havingdepending from its un der side two last pins 17 adapted to enter theusual sockets formed in the top of the last of a rubber shoe 100. Theshoe, shown in dot-and-dash lines, has a foxing 200 and a sole 300, themargin of the sole having been bent up, as has been described above, theline of its upper edge being indicated at 400. In order to press thisupturned portion of the sole, and particularly the extreme upper portionthereof, against the sid s of the shoe-in this case against the foxingthere are provided two substantially U-shaped holders indicated as aWhole at A and B each a distensible rubber tube with closed ends. 1

. at 70, carried by the table 3.

Inasmuch as the two holders and their associated parts are substantiallyalike, only one of them will be described in detail. The holder Aconsists of seven sections comprising a base section 19 and sidesections 21. These sections, as best shown in Figure 2, are shaped sothat they may be arranged in the general form of a U. Two flexible steelbands 23, 25, of which the band 23 is fastened to the base section 19and threeof the side sections 21 and the band 25 is fastened to the basesection and the other three side sections, hold the sections togetherwhile permitting the legs of the U-shaped holder to be moved toward andfrom each other. The sections of the holder are flat on their hottomsand rest upon the table 3.

In order to move the "holder A toward and from the shoe 100 as well asto open and Close the holder by swinging the legs thereof,

'the base section 19 is fast to one end of a rod 27 which is slidable ina. horizontal bore in the standard 5. To the other end of the rod arepivoted at 29 the inner ends of two arms 31, 32. The outer end of thearm 31 is pivoted at 33 to one end of a slide rod 35 the other end ofwhich is pivoted at 37 to one end of a link 39, the other end of saidlink being pivoted at 11 to an ear 43 formed on one of the side sections21 at the end of one of the legs of the U-shaped holder. The outer endof the other arm 32 is connected in a similar manner to the side section21 at the end of the other leg of the holder by means of a slide rod 45,a link 4.7 and an car 49. Pivoted respectively to the arms 31 and 32 arethe inner ends of links 51, 53, the outer ends of which are pivoted to ablock which is slidable transversely of the axis of the rod 27 in ahorizontal guideway formed in the upper portion of an upright arm 57,the block bein held in the guideway by plates 59. The hub of this armhas a square hole to receive a square rod 61 and is firmly fastened tothe rod by dowel pins 63 and a nut 65 which is threaded upon a reducedend of the rod. This rod is slidably mounted in grooves formed in theundersides of lugs 67 69 which are rigid with the table 3 and is held inthe grooves by plates 71 fastened by screws 73. Formed on the under sideof the rod 61 is a rack 64 with which meshes a pinion 66 fast to arock-shaft 68, said rock shaft being rotatable in brackets, one of whichis shown Pinned t0 the outer end of the shaft is the hub of a handle 72by which the shaft 68 may be rocked.

With this construction the U-shaped holder A will be moved away from therear part of the shoe 100 and its legs swung apart when the shaft 68 isrocked in a direct-ion to move the slide rod 61 to the left (Fig. 1) andwhen later the slide rod is moved to the right to move the holder A intooperative relation to ;another shoe, the base of the holder will firstcontact with the rear end of the shoe and then the legs of the holderwill swing toward each other to cause the holder to close about thesides of the rear part of the shoe. It should be particularly noted thatthe links, arms and rods which connect the ends of the legs of theU-shaped holder to the reciprocatory rod 61 form an equalizing device sothat right and left shoes, as well as shoes of different styles will beproperly engaged by the holder.

The holder B, which is designed to extend around the forepartof theshoe, is substantially like the holder A and will not be described indetail. This holder, like the holder A, is made up of sections 119,121,fastened together by flexible steel bands 123, 125. Its

base member 119 is fast to a rod 127, which corresponds to the rod 27 ofthe holder A, and is connected to a slide rod 161 1) in the same manneras the rod 27' is connected to the rod 61. The links 139, 147 correspondto the links 39, 17; the slide r-ods 135, 145 correspond to the sliderods 35 and 45; and these rods are connected to the slide rod 161 bymeans of arms and links like the corre sponding arms and links whichconnect the slide rods 35 and 15 with the slide rod 61. This slide rod161 is operated in the same manner as is the slide rod 61 by means of arack and pinion and a handle which are like the rack 64 the pinion 66and the handle 72. In the operation of the machine, one of the holders,for example A, is moved into operative relation to the rear part of theshoe and pressure applied to the shoe in a 11]2lIl-- ner which willpresently be described; and then this holder is withdrawn and the otherholder B moved into operative position and pressure applied to the shoe,the holders being of sufficient length so that the areas of the shoeupon which pressure is exerted by the respective holders overlap at themiddle portion of the shoe.

Referring now more particularly to F igure 2, the manner in which thedistensible members are mounted in the holders A and B will bedescribed; and inasmuch as the mounting of each member in its holder isthe same, only the mounting of the distensible member 75 in the holder Awill be described in detail.

The sections 19, 21 of the holder, except the two end sections 21, eachcomprise a metallic shell open at both ends, the two end sections 21being closed at their outer ends. In each section the top wall and thewall toward the shoe are cut away in the manner shown in Figure 1 withrespect to the section 19; and inside each shell and forming a part ofeach section is a hollow lining member 77 of resilient material such asrubber. The wall of'each lining memberis partly cut away on the top andon the side toward the shoe to form a narrow slot in which the adjacentportion of the edge and upturned margin of the sole may be received,with the adjacent portion of the bottom of the sole resting upon theupper surface79 of the cut-off side wall and the adjacent portion of theupper of the shoe resting against the cut-off surface 81 of the topwall.

In order to ensure that, when the thin rubber distensible member 7 5 isinflated, no part of it shall tend to be forced in between the walls ofthe lining member and the adjacent portions of the shoe, the top wall ofthe lining member tapers downwardly to a thin edge 82, and the side walladjacent to the sole of the shoe tapers to a thin edge 85. The two wallsthus hare thin tapered ends which are forced tightly against the shoewhen the distensible member is inflated so that there can be no spacebetween the walls and the shoe into which adjacent portions of thedistensible member might be forced. It will be understood that eachsection of the holder comprises a rubber lining member substan tiallylike the member 77.

The distensible member 75 is in the form of a thin rubber tube closed atboth ends and may be inflated, when desired, by forcing air through atube 83 which leads through the metallic shell and the rubber liningmember of the section 19 into the distensible member. Any suitablemechanism, not shown, may be used for forcing air through the tube 83 toinflate the member 75 and for permit ting air to escape through the tubeto deflate the member.

Referring briefly to the holder B, the distensible member 175 is mountedin the rub ber lining members, one of which is shown at 177 in the samemanner in which the distensible member 75 is mounted in the rubberlining members of the holder A. A tube 183, which corresponds to thetube 83 of the holder A leads into the distensible member 175. It shouldbe particularly noted that it is the rubber lining members of thesections of the holders which contact with the shoe when the holders areclosed about the ends of the shoe and that, since these lining membersare resilient, they will conform substantially to the curves of theportions of the shoe with which they contact.

In the operation of the machine the shoe is placed upon the pins 17 ofthe block 13 and located properly as to its height above the table andas to its position substantially midway between the holders by adjustingthe position of the rod 9 and the block 13. One of the holders, forexample the holder A, is

caused to contact with the rear end of the thereby press the upturnedmargin of the sole against the foxing." Air is then permitted to escapefrom the distensible member, the holder A withdrawn and the holder Bmoved into contact with the forepart of the shoe, the member 175 firstdistended and then permitted to contact, and the holder B withdrawn. Theupturned margin'of the sole, and particularly the extreme upper portionof the margin along the edge, is thus pressed into firm contact with thefoxing so that an unbroken joint between the margin of the sole and thefoxing will result from the subsequent vulcanization.

Although the invention has been set forth as embodied in a machine forpressing the upturned margin of the sole into place it should beunderstood that the invention is not limited in the scope of itsapplication neither to the particular machine which has been shown northe pressing of any particular part of a shoe.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is:

1. A machine for applying pressure to a shoe having, in combination, asectional holder, flexible means for fastening the sections together,and a distensible member mounted in the holder.

2. A machine for applying pressure to a shoe having, in combination, asubstantially U-shaped sectional holder, flexible means for A fasteningthe sections together, a distensible member mounted in the holder, andmeans for distending the member.

3. A machine for applying pressure to a shoe having, in combination, asectional holder each section comprising an outer rigid member and aresilient lining member, means ion for fastening the sections together,a dis tensible member mounted in the holder, and means for distendingthe distensible member.

4. A machine for applying pressure to a shoe having, in combination, asubstantially U-shaped sectional holder each section com- 1 prising anouter rigid member and a resilient lining member, means for fasteningthe sections together, a distensible member mounted in the holder, andmeans for distending the distensible member. V

5. A machine for applying pressure to a shoe having, in combination, asectional holder each section comprising an outer rigid member and aresilient lining member, flexible means for fastening the sectionstogether,

a distensible member mounted in the holder, and means for distending thedistensible member.

6. A machine for applying pressure to a shoe having, in combination, asubstantially U-shaped holder having an elongated chamber therein onewall of which is made of resilient material and an elongated distensiblemember located in the chamber.

7. A machine for applying pressure to a shoe having, in combination, asubstantially U-shaped holder having an elongated chamber therein onewall of which is made of resilient material, said wall having a slot toireceive the edge of the sole of the shoe, and an elongated distensiblemember located in the chamber.

8. A machine for applying pressure to a shoe having, in combination, asubstantially U-shaped sectional holder, flexible means for fasteningthe sections together, a distensible member mounted in the holder, meansfor moving the holder to cause the holder first to contact with an endof a shoe and then to hclose about the sides of the shoe, and means forforcing fluid into the distensible member.

9. A machine for applying pressure to a shoe having, in combination, twosectional substantially U-shaped holders, flexible 17$,means forfastening the sections of each holder together, a distensible tubularmember in each holder, means for alternately moving the sections intocontact with and closing them about portions of a shoe, and means ,fordistending the members.

10. A machine for applying pre sure to a shoe having, in combination,two substantially U-shaped holders, adistensible member mounted in eachholder, means for moving Q;.one of the holders into perative relatioi'ito one end and adjacent side portions of a shoe, means for forcing fluidinto the distensible member of that holder, means for thereafterwithdrawing that holder and for moving the jother holder into operativerelation to the other end and adjacent side portions of the shoe, andmeans for forcing fluid into the distensible member of said otherholder.

11. A machine for applying pressure to a Q-shoe having, in combination,two substantially U-shaped holders, a distensible member mounted in eachholder, means for moving one of the holders into operative relation toone end and adjacent side portions of a ii-shoe, means for forcing fluidinto the dis tensible member of that holder, means for thereafterwithdrawing that holder and for moving the other holder into operativerelation to the other end and adjacent side porfi tions of the shoe, andmeans for forcing fluid into the distensible member of said otherholder, the holders being of such length that the areas upon whichpressure is exerted overlap intermediate the ends of the shoe. 5H 12. Amachine for pressing the upper edge of the upturned margin of a rubbersole against the sides of a shoe having, in combination, a holder shapedto fit about a por tion of a shoe and having a slot to receive 69 theedge of the sole of the shoe, and a distensible member mounted in theholder.

13. A machine for pressing the upper edge of the upturned margin of arubber sole against the sides of a shoe having, in com- 035 bination, aholder, shaped to fit about a portion of a shoeand havin a slot thewalls of which are made of resilient material to receive the edge of thesole of the shoe, and a distensible member mounted in the holder.

14. A machine for applying pressure to a shoe along the lower edgethereof having, in combination, means for supporting the shoe, aplurality of distensible pressure-applying members, and means for movingthem alternately into contact with the shoe.

15. A machine for applying pressure along the lower edge of a shoehaving, in combination, a support for the shoe, a plurality of U-shapeddistensible members, and means for moving each member bodily and at thesame time causing it to close about the shoe.

16. A machine for pressing the upper edge of the upturned margin of arubber sole against the sides of a shoe having, in combination, asectional holder each section comprising a rigid shell, a resilientlining member having its walls cut away to provide a slot, the wallsadjacent to the slot being tapered to thin edges, and a distensiblemember carried by the holder and adapted to act through the slots in thelining members.

17. A machine for applying pressure to a shoe having, in combination,two substantially U-shaped holders, a distensible member mounted in eachholder in such manner that movement of the holders toward and from theshoe moves the distensible members, means for moving one of the holderswith its distensible member into operative relation to one end andadjacent side portions of the shoe, means for forcing fluid into thedistensible member of that holder, means for thereafter withdrawing thatholder and member and for moving the other holder with its distensiblemember into operative relation to the other end and adjacent sideportions of the shoe, and means for forcing fluid into the distensiblemember of said other holder.

In testimony whereof I have signed my name to this specification.

FAY D. KINNEY.

CERTIFICATE or CORRECTION.

Patent No. 1,822, 039. Granted September 8, 1931, to

FAY D. KINNEY.

It is hereby certified that error appears in the printed specificationof the above numbered patent requiring correction as follows: Page 3,line 82, strike out the word- "not; and that the said Letters Patentshould be read with this correction therein that the same may conform tothe record of the case in the Patent Office.

Signed and sealed this 22nd day of March, A. D. 193;.

M. J. Moore, (Seal) Acting Commissioner of Patents.

